They need to start looking at B and T cells rather than antibodies to show longer immunity
Is it possible that it's better to suppress rather than boost T cells when it comes to Covid?
Overactive immune system - the cytokine storm - is what makes some Covid patients so sick and die.
Several immunosuppressants are already being used as part of Covid treatment. Steroids like dexamethasone and budesonide, and biologics like tocilizumab.
Interesting summary of potential treatments here.
www.health.harvard.edu/diseases-and-conditions/treatments-for-covid-19
I guess, with the B and T cells, it's a balancing act? Strong enough to fight off initial infection, but not so strong that they go into overdrive.